I have been reloading for over 50 yrs and was a bomb disposal tech for 27 yrs and this is the best and easiest to understand explanation I've have run into ! Thanks
I was also an Ammo Tech Officer and agree that Mark gives a good description.. A couple of points however I would want to pick up on.. Firstly the issue over the "all burned" point. Having unburned powder when the bullet exits the barrel is not the cause of muzzle flash, that is caused by hot carbon monoxide (a by product) igniting on contact with oxygen in the air. The result of having unburned powder is that the muzzle velocity becomes inconsistent leading to vertical stringing at the target end. Ideally all the propellent should be burned about 2/3 up the barrel to allow for temperature variations on the burning rate. Secondly, comparing powder burning rates to octane rating is incorrect. Octane rating is about detonation resistance. High octane fuel will not detonate (pinking or knocking) in a high compression engine. Theoretically this is also a possibility in a gun, but is only thought to be a risk with too small loads of too slow powder. I would stay well away from this comparison! You do not want propellent to detonate.. trust me!
One of the best videos I've seen on understanding burn rate. I just got into reloading and videos like this really cut down on the learning curve. Great job!
I just found this video, & I want to say thank you I’m using a 38 special +P in a 2 inch barrel, that’s 1 extreme. The other is a Marlin with a 16 inch barrel, from 1 extreme to the other. What works in the 1 won’t work in the other. Thank you for the video. Thank you Sir & Ma’am
Thanks Mark for explaining "Powder Ignition" and "Burn Duration Characteristics". Like you I have noticed "Better" to "Great" accuracy with the 210M in my 300 Win Mag, but work up a "Mag primer" load for cold weather hunting conditions. Good job!
Thanks again Mark. Not only interesting but also helpful. I had a general understanding of different burn rates but had questions/doubts about what primer to use. You have clarified this for me. I really appreciate what you do for us in the shooting community.
Excellent video again , I'm always learning something from your video's , I've been using Magnum primers for my 300wsm because that's what I thought you needed !!! Have a great Xmas & can't wait for your next video.
I don't remember the threshold but essentially if you have i think its 50gr or better of powder to burn you want a magnum primer otherwise normal primers are the deal
Very useful information. From basic physics, I understand the area under the pressure curve as the bullet moves down the barrel is the energy you get. E=FD. I'm working up a load in 243 Winchester. I have Federal #215M primers and Alliant Reloader 16 to push 105gr Nosler RDF noses. I've also got Bergers of the same weight, both target and VLD. I'm on a 20" barrel with "heavy contour". 500 meters is my maximum range due to my location. So here's hoping! Primers are impossible to find in my area at this time. So I've got what I've got.
Very helpful and informative thank you I’m actually just getting ready to do my first reloads actually a friend of mine is doing them for me for 65 PRC great video cheers mate
When I used small rifle primer in 6.5 Creedmoor 140-grain bullets with IMR 4064, I would get hang fires. After I switched to use Magnum Small Rifle primers, no more hang fires. This is validated by other reloaders as well, very interesting.
😲😲😲 You know i never would have thought you could break it down like this! The primers in my 7mag i had some problems with before! New out the box some would fire and some not! I forget what i was using but now use fed gmm and not had an issue with them!
Gday mate, new to reloading myself and has definitely mate it easier to work as I have several rifles with different barrel lengths. Thank you for your insight
Mark... Ive got to be honest. My less than stellar connection, and the buffering it leads to isn't doing your photogeneity any favors! 😂 thanks for the awesome video as always. Good info, easily understandable for even dumb old me! Merry Christmas and happy new year!
and you got to watch wintertime loads vs summertime loads, winter you can add more powder, summer with the same load you may need to reduce, depending on climate and your shooting peroids...good vid M&S
I initially figured out about burn rates after I purchased my first chronograph. Interestingly, I didn't use it for rifles but, for shotguns as I was wondering how much barrel length affected the speed of the various loads as well as if I could get the same speeds for different lengths. I was able to discover that anything longer than 28" didn't increase velocity which I found amusing when I went goose hunting and saw some guys shooting 36" barreled, bolt action shotguns. They told me that they were able to kill geese at over 100 yards but, I don't think they knew how to tell distance.
Very interesting I wonder if regular large rifle primers from 1:8.5 or 1:9 twist 24-26" 300 prc barrel, shooting 178 grain ELDX with faster powders will give me issues vs a 30 inch barrel shooting 220 eld-m or 240 grain match kings using a slower powder like rl26. At any rate I am happy to hear I can use my large rifle primers under standard or warmer atmospheric conditions. Fascinating how much there is to play with. At least I get some time until winter months to source magnum primers. Should have picked up those 215m off the shelf when I had the chance. 😂
Buy QuickLoad software for your computer to learn in-depth what Mark explained. It will change your entire perspective on reloading. You can compute your own loads and predict velocities and pressures extremely accurately without firing a round. It’s amazing. You will know if the powder burns completely for your gun’s barrel length. Select the best powder for short or long barrels.
What happens if you use a magnum primer in a non magnum case? I accidentally primed some .308 cases with CCI 250 magnum instead of the CCI 200 large rifle primers in a few of a large lot .....didn't notice a difference in seating them but realized a box (100) was mixed in... the lot was 1000 after I was finished... also what's the difference in Bench rest primers vs regular 🤔 ?
As said, just a more powerful primer, so load pressure will increase a little, as for match v regular, not much, just a little more quality control, FYI, if you are chasing more info than on the videos, consider becoming a member, we help those that help, Cheers
I have been reloading for over 50 yrs and was a bomb disposal tech for 27 yrs and this is the best and easiest to understand explanation I've have run into ! Thanks
Thanks Jim, Cheers Man
You should get out more and read/ view other’s knowledge. Mark does a good job, however.
I was also an Ammo Tech Officer and agree that Mark gives a good description.. A couple of points however I would want to pick up on..
Firstly the issue over the "all burned" point. Having unburned powder when the bullet exits the barrel is not the cause of muzzle flash, that is caused by hot carbon monoxide (a by product) igniting on contact with oxygen in the air. The result of having unburned powder is that the muzzle velocity becomes inconsistent leading to vertical stringing at the target end. Ideally all the propellent should be burned about 2/3 up the barrel to allow for temperature variations on the burning rate.
Secondly, comparing powder burning rates to octane rating is incorrect. Octane rating is about detonation resistance. High octane fuel will not detonate (pinking or knocking) in a high compression engine. Theoretically this is also a possibility in a gun, but is only thought to be a risk with too small loads of too slow powder. I would stay well away from this comparison! You do not want propellent to detonate.. trust me!
One of the best videos I've seen on understanding burn rate. I just got into reloading and videos like this really cut down on the learning curve. Great job!
Cheers Nathan
I just found this video, & I want to say thank you
I’m using a 38 special +P in a 2 inch barrel, that’s 1 extreme. The other is a Marlin with a 16 inch barrel, from 1 extreme to the other.
What works in the 1 won’t work in the other.
Thank you for the video. Thank you Sir & Ma’am
Cheers Man, thank you
Thanks Mark for explaining "Powder Ignition" and "Burn Duration Characteristics". Like you I have noticed "Better" to "Great" accuracy with the 210M in my 300 Win Mag, but work up a "Mag primer" load for cold weather hunting conditions. Good job!
Thanks Chris, Cheers
Wow. Yes indeed. Really great discussion. Added to me playlist. Thank you.
Cheers
Thanks again Mark. Not only interesting but also helpful. I had a general understanding of different burn rates but had questions/doubts about what primer to use. You have clarified this for me. I really appreciate what you do for us in the shooting community.
Cheers Dave, thanks
Thank you both for the awesome videos. Keep up the great work
Cheers
I'm just starting to get into long range shooting, finding your videos really helpful and informative. Love the channel, keep up the great work!
Thanks Jacob, Cheers
The info here help A LOT giving me a better understanding of whats going on. Thank you!
Cheers Teddy, thanks
Good explanation of why you would choose certain components and really good simplification of the pressure curve.
Cheers Matt, thanks
Knowledge is power , thanks for additional knowledge, all ways the best to yourself and Sam ! 👍👍
Cheers Johannes, thanks
I can listen to you all day long... Thanks for all you do and knowledge you pass along!!!
Cheers Dan, glad you like, thanks
That’s the best explanation I’ve seen. Awesome video. Thanks for making them.
Thanks Chris
Great explanation Mark
Cheers
Great tip on the primers mark
Cheers
Incredibly good information. Thank you.
Cheers
I feel like I'm taking a class from the end all, be all, professor!! Thanks for the content. You guys are the Bomb. haha
Lol, thanks man, Cheers
Excellent video again , I'm always learning something from your video's , I've been using Magnum primers for my 300wsm because that's what I thought you needed !!! Have a great Xmas & can't wait for your next video.
Merry Christmas Shane, thanks
I don't remember the threshold but essentially if you have i think its 50gr or better of powder to burn you want a magnum primer otherwise normal primers are the deal
You guys continue to impress,thanks Again, Have a Merry Christmas 🎅and a Prosperous New Year 🤞🙏
Merry Christmas, Cheers
Great explanation! Nice video! Merry Christmas to you and Sam!
Merry Christmas, Cheers
Have a merry Christmas. Thanks for the video.
Cheers Man, thanks
Very useful information. From basic physics, I understand the area under the pressure curve as the bullet moves down the barrel is the energy you get. E=FD. I'm working up a load in 243 Winchester. I have Federal #215M primers and Alliant Reloader 16 to push 105gr Nosler RDF noses. I've also got Bergers of the same weight, both target and VLD. I'm on a 20" barrel with "heavy contour". 500 meters is my maximum range due to my location. So here's hoping! Primers are impossible to find in my area at this time. So I've got what I've got.
Cheers
Super great video Mark & Sam!!!!
Cheers
Thanks Mark very well described easy to understand Steve .
Cheers
Very helpful and informative thank you I’m actually just getting ready to do my first reloads actually a friend of mine is doing them for me for 65 PRC great video cheers mate
Cheers
When I used small rifle primer in 6.5 Creedmoor 140-grain bullets with IMR 4064, I would get hang fires. After I switched to use Magnum Small Rifle primers, no more hang fires. This is validated by other reloaders as well, very interesting.
Cheers
Good advice. Thanks again.
Cheers
Thumbs up, man. Today I understood some more... all the best for X-mas.
Cheers and Merry Christmas
Good discussion!
Cheers
😲😲😲 You know i never would have thought you could break it down like this! The primers in my 7mag i had some problems with before! New out the box some would fire and some not! I forget what i was using but now use fed gmm and not had an issue with them!
Cheers
Gday mate, new to reloading myself and has definitely mate it easier to work as I have several rifles with different barrel lengths. Thank you for your insight
Cheers Jean, thanks
Good info as usual! Thanks.
Cheers
Great video....
Cheers
Mark & Sam...... Have A Merry Christmas and a Happy New Year !!!
Merry Christmas
Mark... Ive got to be honest. My less than stellar connection, and the buffering it leads to isn't doing your photogeneity any favors! 😂 thanks for the awesome video as always. Good info, easily understandable for even dumb old me! Merry Christmas and happy new year!
Merry Christmas, Cheers
That was great information and very well presented. Big thanks from me!
Cheers
and you got to watch wintertime loads vs summertime loads, winter you can add more powder, summer with the same load you may need to reduce, depending on climate and your shooting peroids...good vid M&S
Yep, Cheers
Really like the 7 saum. Seems to check a lot of boxes!
Cheers
Good stuff there..
cheers
Thank you Sir!
Cheers
Thanks.Merry Merry and Happy Happy 🎄🎄🍾🥂
Merry Christmas Rob, Cheers
Rethinking my use of LR mag primers. That was good food for thought.
Cheers
I initially figured out about burn rates after I purchased my first chronograph. Interestingly, I didn't use it for rifles but, for shotguns as I was wondering how much barrel length affected the speed of the various loads as well as if I could get the same speeds for different lengths. I was able to discover that anything longer than 28" didn't increase velocity which I found amusing when I went goose hunting and saw some guys shooting 36" barreled, bolt action shotguns. They told me that they were able to kill geese at over 100 yards but, I don't think they knew how to tell distance.
Yes, same page, glad you liked, Cheers
Thanks Mark
Cheers
Thanks mate
You and Sam have a good Xmas
Cheers
Rob
Merry Christmas Rob, Cheers
Very interesting I wonder if regular large rifle primers from 1:8.5 or 1:9 twist 24-26" 300 prc barrel, shooting 178 grain ELDX with faster powders will give me issues vs a 30 inch barrel shooting 220 eld-m or 240 grain match kings using a slower powder like rl26.
At any rate I am happy to hear I can use my large rifle primers under standard or warmer atmospheric conditions. Fascinating how much there is to play with. At least I get some time until winter months to source magnum primers. Should have picked up those 215m off the shelf when I had the chance. 😂
Cheers
This helps, Thanks. I was looking at how to support you on your .300 Norma Mag but it doesn't show it?
We do club memberships for that now, link below the video, Cheers
Buy QuickLoad software for your computer to learn in-depth what Mark explained. It will change your entire perspective on reloading. You can compute your own loads and predict velocities and pressures extremely accurately without firing a round. It’s amazing. You will know if the powder burns completely for your gun’s barrel length. Select the best powder for short or long barrels.
Cheers
Don't forget to "Tap" the bell and subscribe! EXCELLENT DISCUSSION! Thank You Mark!!
Thanks Bob, Cheers
What happens if you use a magnum primer in a non magnum case? I accidentally primed some .308 cases with CCI 250 magnum instead of the CCI 200 large rifle primers in a few of a large lot .....didn't notice a difference in seating them but realized a box (100) was mixed in... the lot was 1000 after I was finished... also what's the difference in Bench rest primers vs regular 🤔 ?
As said, just a more powerful primer, so load pressure will increase a little, as for match v regular, not much, just a little more quality control, FYI, if you are chasing more info than on the videos, consider becoming a member, we help those that help, Cheers
@@markandsamafterwork thank you Mark.
You guys having trouble getting ADI powder haven’t been able to get any for months
We have supplies, but yes hard to find for sale, cheers
Bigg cace ned long pipe ca 28-30 inches. I have se 300w magnum änd 18 inches pipe.1😱🙂
Cheers